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Wire rope inspection instrument for elevator

A technology for inspection devices and steel wire ropes, applied in textile cables, transportation and packaging, textiles and papermaking, etc., can solve problems such as complex structures

Active Publication Date: 2009-06-17
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, a large number of twisted wires need to be measured for each twisted wire, so a device with a complicated structure is required
In addition, the prior art disclosed in the above-mentioned Patent Document 2 can only detect damage to the outer cladding layer.

Method used

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  • Wire rope inspection instrument for elevator
  • Wire rope inspection instrument for elevator
  • Wire rope inspection instrument for elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Steel wire ropes are generally formed by twisting metal wires into twisted wires, and then further twisting the twisted wires. Alternatively the wire rope is formed by twisting the twisted wires into strands and then further twisting the strands.

[0033] figure 1 Indicates the structure of the wire rope inspection device. The inspection object of this wire rope inspection device is a steel wire rope 2 which has a plurality of strands 8 , 11 , 12 , 16 , 17 , 18 , 19 and whose outer layer is covered with resin 9 . In addition, this inspection device is installed on the wire rope 2 for a long period of time in order to detect the damage state of the wire rope 2 at a predetermined time period.

[0034] The wire rope 2 passes through the sheave 1 while receiving tension from loads such as the elevator car and counterweights, so it bends every time it passes through the sheave 1 . In the case of long-term use, there will be a slight speed deviation between the resin and t...

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PUM

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Abstract

The invention provides an elevator wire rope detection device, capable of detecting the damage situation of an outer-layer cladding layer of resin clad wire ropes and the fracture situation of the wire ropes step by step and obtaining the early damage situation of the wire ropes. The elevator wire rope detection device is used for detecting the wire ropes, and the wire ropes are twisted into the twisting wires by the metal wires and the twisting wires are further twisted into the strands (8-19) and then the strands are clad by the resin in preset interval. The elevator wire rope detection device detects whether electric conduction between the adjacent twisting wires in the twisting wires or the adjacent strands in the strands (8-19) or not.

Description

technical field [0001] The invention relates to an inspection device for steel wire ropes of an elevator, which is especially suitable for inspecting the damage of steel wire ropes with a resin coating layer. Background technique [0002] Steel wire ropes used in elevators may gradually break due to fatigue, wear and other reasons. When the number of broken steel wires gradually increases with the passage of time, causing the number of broken steel wires to exceed the specified number, it is judged that the service life of the steel wire rope has expired and the steel wire rope is replaced. Therefore, it is necessary to confirm the broken part of the steel wire with the naked eye or a detection instrument through regular inspection, and to evaluate whether the steel wire rope can continue to be used safely. [0003] In recent years, along with the downsizing of the hoisting machine and the reduction in the diameter of the sheave, some elevators have begun to use resin-coate...

Claims

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Application Information

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IPC IPC(8): B66B7/12B66B5/00
CPCD07B1/145D07B2501/2007
Inventor 佐藤五郎浅井大辅中山真人前田太一有贺正记早野富夫
Owner HITACHI LTD
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